Home / 4,913.46-6,779.40-3,120.30

Finding the Fourth Proportional to 4,913.46, 6,779.40 and 3,120.30

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Solution

The fourth proportional to 4,913.46, 6,779.40 and 3,120.30 is: 4,305.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,913.46 : 6,779.40 = 3,120.30 : x
  2. Step 2: Convert to fraction form
    4,913.46/6,779.40 = 3,120.30/x
  3. Step 3: Cross multiply
    4,913.46x = 6,779.40 × 3,120.30
  4. Step 4: Simplify right side
    4,913.46x = 21,153,761.82
  5. Step 5: Solve for x
    x = 21,153,761.82/4,913.46
  6. Step 6: Final answer
    x = 4,305.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.